public class lihaoqi {

    public static void main(String[] args) {
        System.out.println("* ");
        System.out.println("* * * ");
        System.out.println("* * * * * ");
        System.out.println("* * * * * * * ");
        System.out.println("* * * * * ");
        System.out.println("* * * ");
        System.out.println("* ");
    }


}
